Dust-collector



E. W. HOOVER.

DUST COLLECTOR.

Patented Mar. 14, 1893.

UNITED STATES PATENT OFFICE.

ELIAS W. HOOVER, OF CHICAGO, ILLINOIS.

DUST-COLLECTO R.

SPECIFICATION forming part of Letters Patent No. 493,504, dated March14, 1893.

Application filed March 2, 1892.

To all whom it may concern.-

Be it known that I, ELIAS IV. HOOVER, a citizen of theUnited States ofAmerica, residing at Ohicago,in the county of Cook and State ofIllinois, haveinvented certain new and useful Improvements inDust-Collectors, of which the following is a specification.

My invention relates to certain improvements in a dust collector of aclass which have lately come into extensive use, and in which theseparation ofthe dust from the air by means of which it is conveyed, isaccomplished by utilizing the difference in weight between. the dustparticles and the particles of air. The general principles involved inthis dust collector have been utilized before for the same purpose, butmy invention has for its object the more perfect combination andarrangement of parts, in order that compactness, cheapness and lightnessmay be obtained, and, at the same time, the most perfect separationpossible of the air from the dust.

To such end said invention consists in certain essential features of theconstruction set forth below. Said construction will be de scribedspecifically, in its preferred form, without, of course, intending tolimit the invention thereto. The essential features will then be clearlypointed out in the claim appended to this specification.

In the drawings, Figure 1 is a central vertical section taken flatwiseof the collector, and Figs. 2 and 3, central vertical sections at rightangles to the first, said sections being Views taken in the directionsof the arrows, 2 and 3, respectively, in Fig. 1.

The main body of the collector consistsof a drum, A, having sideopenings, 0., leading into the open air. The pipe which brings the dustand air to the collector is shown at B, and empties into an encirclingduct or passage, O, passing part way around the drum, A, and openinginto said drum by means of a slot, 0, out in the convex surface thereof,preferably of a width equal to the duct, 0. Within the drum, A, a seriesof diaphragms, D, D, D is arranged just within the slot, 0, andoverlapping each other, as shown, so as to leave passages, d, from theduct, 0, into the interior of the drum, A. Beneath said drum is aconical dust receiver, E,into which Serial No. 423,518. (No model.)

the duct, 0, empties, and an opening, 6, connects the interior of thedust cone with that of the drum, A. A flange, F, is arranged in theinterior of the drum, A, as seen in the figures, commencing a littlemore than half way up on the left hand side in Fig. 1 by the dottedline, and passing diagonally across the concave interior of the drum,terminates near the bottom thereof and there communicates, by means of aspout,f, with the dust cone, while I prefer to locate the spout, f, atone side, as shown, yetit may be placed in the central opening, 6, ifpreferred.

In operation, the dust enters through the pipe, B, under the impulse ofa fan or other suitable pressure blower, and, passing around through theduct, O, is discharged into the cone, E. As the duct, 0, contractstoward its discharge end a back pressure is created which forces acertain amount of air backward through the openings, cl, between thediaphragms, D, D, D into the drum, A. Also, after the dust reaches thecone, E, a portion of the air which it still carries with it thereescapes upward through the opening, 6, into the drum, A. The passage ofthe air from the duct through the openings, (1, creates a circularmotion in the drum, opposite to that in the duct, and a portion of thedust which still remains in the air is deposited in 'the drum, fromwhich it is gradually worked, by means of the internal flange or rib,F,and the spout,f, down into the dust cone.

I claim as new and desire to secure by Letters Patent- The combinationwith a drum, A, having side openings, at, and an encircling duct, 0,opening into the interior of the drum through passages, d, in adirection opposite to the current of air in the duct, 0, of a dust cone,E, arranged beneath the drum, A, and at the discharge end of the duct,0, having a central opening from it into the drum, A, an opening, f,from the interior of the drum into the dust cone, and an internal flangeor rib, F, adapted to guide the dust in the drum to the opening, f,substantially as described.

ELIAS W. HOOVER. WVitnesses:

H. BITNER, CHAS. O. SHERVEY.

